port is closed after port forwarding

rock100010000 · Jul 18, 2016

I am using a Netgear WNR 1000 and have port forwarded several ports and the ports are still closed when I test them. I've tried disabling the firewall already, so that isn't the issue.

EDIT: I do have a program listening on the ports I have tried testing.

greens · Jul 18, 2016

A port without a service is the same as a closed port.

Do you have services up and running at the time of the test?

boosted1g · Jul 18, 2016

Most common issues when people try to portforward

1) They try to access the port/service using the computer's IP address and not their internet connection's IP address
2) They don't set the local computer's IP address and port number in router configuration. You want the local port field, not the external port.
3) They test the port without running the actual application. Most port testers will not work without the program actually running; thus testing if your FTP port is open will only work if the FTP server application is running.

boosted1g · Jul 18, 2016

Guide for properly configuring poirt forwarding on WNR 1000 for different servers: http://portforward.com/english/routers/port_forwarding/Netgear/WNR1000/default.htm

rock100010000 · Jul 18, 2016

boosted1g :

1. I am trying to connect to my static IP
2. In my router's port forwarding menu I chose the computer I am attempting to test the port on
3. I have tried multiple applications that listen on the port while testing it and it still says it's closed.

boosted1g · Jul 18, 2016

Well something has to be set wrong.

Can you take a screen capture of your router configuration and post it (you will need to upload the photo to imgr or some other photo hosting site).

rock100010000 · Jul 18, 2016

boosted1g :

Sure thing, https://gyazo.com/d69eca62e6c0bbbb68b8d9eed37d4e9a

In the past I've hosted several servers without issue but recently none of the ports are working. We recently had to get a new modem due to an issue with the phone line, so I'm not sure if it would be connected to that.

Within a service this is what it looks like https://gyazo.com/696fffec921da71915442947c9114541

McHenryB · Jul 18, 2016

You are trying to connect from outside of your network, not from a local computer?

rock100010000 · Jul 18, 2016

McHenryB :

I have had a friend try to connect as well as trying to connect locally. If I try to connect with the local host it works fine but by putting in my IP I have issues.

boosted1g · Jul 18, 2016

Are you certain the PC hosting the server is 192.168.1.2?
Are you certain that you inputting the correct external IP of your internet connection when testing the ports? (Just to iterate, the 192.168.1.2 is not your external IP).

rock100010000 · Jul 18, 2016

boosted1g :

Yes, 192.168.1.2 is the internal ip for "ROBERT-PC" which is the PC I am hosting the server on. I am trying to connect to 67.***.***.** (censored for my own safety) so that also isn't the issue.

boosted1g · Jul 18, 2016

When you say local host do you mean the 192.168.1.2 address, or do you mean localhost (as in it says localhost in the address bar or 127.0.0.1)?

rock100010000 · Jul 18, 2016

boosted1g :

By that I mean 127.0.0.1

boosted1g · Jul 18, 2016

Ok, so you know the application itself is working on that port.

And you are absolutely 100 percent certain your IP for that local computer is 192.168.1.2. Seriously, just open up command prompt, type ipconfig and make sure.

rock100010000 · Jul 18, 2016

boosted1g :

https://gyazo.com/b0c804867f0fddbfa4b279b33bf2f61f Yes, it is. (That is from Ethernet adapter Local Area Connection)

boosted1g · Jul 18, 2016

Hmm, very odd then. Try making a new config with ONLY the internal port listed and nothing in external, and then delete the old entry in port forwarding table.

rock100010000 · Jul 18, 2016

boosted1g :

I get an error saying that the starting port address must be less than 65535. https://gyazo.com/ec0ac1e5a6f92d3def3eb4947b0492f2

McHenryB · Jul 18, 2016

So what if you go to the 192.168.1.2 computer and try to run the application at address 192.168.1.2? Are you sure that the application is listening on that address as well as 127.0.0.1? (You don't say what the application is, but the default for some applications is only to listen on the loopback interface, not external ones. For example, that's the default for postgres.)

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